I have a couple of those that i used on my CSE210 class. I got them from the CSE department, i don't think i was supposed to keep them, but whatever. Do you have access to a Computer Engineering department? They might be able to get you a couple.

There's a couple of pretty old ones sitting around at work, but i can't take them. :tongue2:
I think they sell the ribbon cable and the connectors separately. So you want a 10 wire ribbon cable and a female 10 slot DIP connector or something like that. I think your best bet is a local hardware/electronics store.